diff --git a/frameworks/elysia/Dockerfile b/frameworks/elysia/Dockerfile
new file mode 100644
index 0000000..bc0da0a
--- /dev/null
+++ b/frameworks/elysia/Dockerfile
@@ -0,0 +1,8 @@
+FROM oven/bun:latest
+WORKDIR /app
+COPY package.json ./
+RUN bun install --production
+COPY server.ts entrypoint.sh ./
+RUN chmod +x entrypoint.sh
+EXPOSE 8080 8443
+CMD ["/app/entrypoint.sh"]
diff --git a/frameworks/elysia/entrypoint.sh b/frameworks/elysia/entrypoint.sh
new file mode 100644
index 0000000..0a30f97
--- /dev/null
+++ b/frameworks/elysia/entrypoint.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+CPUS=$(nproc)
+for i in $(seq 1 "$CPUS"); do
+  bun run /app/server.ts &
+done
+wait
diff --git a/frameworks/elysia/meta.json b/frameworks/elysia/meta.json
new file mode 100644
index 0000000..8346ccc
--- /dev/null
+++ b/frameworks/elysia/meta.json
@@ -0,0 +1,18 @@
+{
+  "display_name": "Elysia",
+  "language": "TS",
+  "type": "framework",
+  "engine": "JSC",
+  "description": "Ergonomic TypeScript framework built for Bun with end-to-end type safety and excellent DX.",
+  "repo": "https://github.com/elysiajs/elysia",
+  "enabled": true,
+  "tests": [
+    "baseline",
+    "pipelined",
+    "limited-conn",
+    "json",
+    "upload",
+    "compression",
+    "mixed"
+  ]
+}
diff --git a/frameworks/elysia/package.json b/frameworks/elysia/package.json
new file mode 100644
index 0000000..1f099f4
--- /dev/null
+++ b/frameworks/elysia/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "httparena-elysia",
+  "private": true,
+  "dependencies": {
+    "elysia": "^1.4.0"
+  }
+}
diff --git a/frameworks/elysia/server.ts b/frameworks/elysia/server.ts
new file mode 100644
index 0000000..cf150b6
--- /dev/null
+++ b/frameworks/elysia/server.ts
@@ -0,0 +1,159 @@
+import { Elysia } from "elysia";
+import { Database } from "bun:sqlite";
+import { readFileSync, readdirSync } from "fs";
+
+const MIME_TYPES: Record<string, string> = {
+  ".css": "text/css", ".js": "application/javascript", ".html": "text/html",
+  ".woff2": "font/woff2", ".svg": "image/svg+xml", ".webp": "image/webp", ".json": "application/json",
+};
+
+// Load datasets
+const datasetItems: any[] = JSON.parse(readFileSync("/data/dataset.json", "utf8"));
+
+const largeData = JSON.parse(readFileSync("/data/dataset-large.json", "utf8"));
+const largeItems = largeData.map((d: any) => ({
+  id: d.id, name: d.name, category: d.category,
+  price: d.price, quantity: d.quantity, active: d.active,
+  tags: d.tags, rating: d.rating,
+  total: Math.round(d.price * d.quantity * 100) / 100,
+}));
+const largeJsonBuf = Buffer.from(JSON.stringify({ items: largeItems, count: largeItems.length }));
+
+// Open SQLite database read-only
+let dbStmt: any = null;
+for (let attempt = 0; attempt < 3 && !dbStmt; attempt++) {
+  try {
+    const db = new Database("/data/benchmark.db", { readonly: true });
+    db.exec("PRAGMA mmap_size=268435456");
+    dbStmt = db.prepare("SELECT id, name, category, price, quantity, active, tags, rating_score, rating_count FROM items WHERE price BETWEEN ? AND ? LIMIT 50");
+  } catch (e) {
+    console.error(`SQLite open attempt ${attempt + 1} failed:`, e);
+    if (attempt < 2) Bun.sleepSync(50);
+  }
+}
+
+// Pre-load static files
+const staticFiles: Record<string, { buf: Buffer; ct: string }> = {};
+try {
+  for (const name of readdirSync("/data/static")) {
+    const buf = readFileSync(`/data/static/${name}`);
+    const ext = name.slice(name.lastIndexOf("."));
+    staticFiles[name] = { buf: Buffer.from(buf), ct: MIME_TYPES[ext] || "application/octet-stream" };
+  }
+} catch (_) {}
+
+function sumQuery(url: string): number {
+  const q = url.indexOf("?");
+  if (q === -1) return 0;
+  let sum = 0;
+  const qs = url.slice(q + 1);
+  let i = 0;
+  while (i < qs.length) {
+    const eq = qs.indexOf("=", i);
+    if (eq === -1) break;
+    let amp = qs.indexOf("&", eq);
+    if (amp === -1) amp = qs.length;
+    const n = parseInt(qs.slice(eq + 1, amp), 10);
+    if (!isNaN(n)) sum += n;
+    i = amp + 1;
+  }
+  return sum;
+}
+
+// Build route handlers as a reusable plugin
+function addRoutes(app: Elysia) {
+  return app
+    .get("/pipeline", () => new Response("ok", { headers: { "content-type": "text/plain" } }))
+
+    .all("/baseline11", async ({ request }) => {
+      const querySum = sumQuery(request.url);
+      if (request.method === "POST") {
+        const body = await request.text();
+        let total = querySum;
+        const n = parseInt(body.trim(), 10);
+        if (!isNaN(n)) total += n;
+        return new Response(String(total), { headers: { "content-type": "text/plain" } });
+      }
+      return new Response(String(querySum), { headers: { "content-type": "text/plain" } });
+    })
+
+    .get("/json", () => {
+      const items = datasetItems.map((d: any) => ({
+        id: d.id, name: d.name, category: d.category,
+        price: d.price, quantity: d.quantity, active: d.active,
+        tags: d.tags, rating: d.rating,
+        total: Math.round(d.price * d.quantity * 100) / 100,
+      }));
+      const body = JSON.stringify({ items, count: items.length });
+      return new Response(body, {
+        headers: { "content-type": "application/json", "content-length": String(Buffer.byteLength(body)) },
+      });
+    })
+
+    .get("/compression", () => {
+      const compressed = Bun.gzipSync(largeJsonBuf, { level: 1 });
+      return new Response(compressed, {
+        headers: {
+          "content-type": "application/json",
+          "content-encoding": "gzip",
+          "content-length": String(compressed.length),
+        },
+      });
+    })
+
+    .get("/db", ({ request }) => {
+      if (!dbStmt) return new Response("DB not available", { status: 500 });
+      try {
+        let min = 10, max = 50;
+        const url = request.url;
+        const qIdx = url.indexOf("?");
+        if (qIdx !== -1) {
+          const qs = url.slice(qIdx + 1);
+          for (const pair of qs.split("&")) {
+            const eq = pair.indexOf("=");
+            if (eq === -1) continue;
+            const k = pair.slice(0, eq), v = pair.slice(eq + 1);
+            if (k === "min") min = parseFloat(v) || 10;
+            else if (k === "max") max = parseFloat(v) || 50;
+          }
+        }
+        const rows = dbStmt.all(min, max) as any[];
+        const items = rows.map((r: any) => ({
+          id: r.id, name: r.name, category: r.category,
+          price: r.price, quantity: r.quantity, active: r.active === 1,
+          tags: JSON.parse(r.tags),
+          rating: { score: r.rating_score, count: r.rating_count },
+        }));
+        const body = JSON.stringify({ items, count: items.length });
+        return new Response(body, {
+          headers: { "content-type": "application/json", "content-length": String(Buffer.byteLength(body)) },
+        });
+      } catch (e: any) {
+        return new Response(e.message || "db error", { status: 500 });
+      }
+    })
+
+    .post("/upload", async ({ request }) => {
+      const ab = await request.arrayBuffer();
+      return new Response(String(ab.byteLength), {
+        headers: { "content-type": "text/plain" },
+      });
+    })
+
+    .get("/static/:filename", ({ params: { filename } }) => {
+      const sf = staticFiles[filename];
+      if (sf) {
+        return new Response(sf.buf, {
+          headers: { "content-type": sf.ct, "content-length": String(sf.buf.length) },
+        });
+      }
+      return new Response("Not found", { status: 404 });
+    })
+
+    // Catch-all for unknown routes
+    .all("*", () => new Response("Not found", { status: 404 }));
+}
+
+// HTTP server on port 8080
+const httpApp = addRoutes(new Elysia());
+httpApp.listen({ port: 8080, reusePort: true });